1313071189 has 2 divisors, whose sum is σ = 1313071190. Its totient is φ = 1313071188.

The previous prime is 1313071181. The next prime is 1313071213. The reversal of 1313071189 is 9811703131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 922336900 + 390734289 = 30370^2 + 19767^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313071189 - 2³ = 1313071181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313071181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656535594 + 656535595.

It is an arithmetic number, because the mean of its divisors is an integer number (656535595).

Almost surely, 2^1313071189 is an apocalyptic number.

It is an amenable number.

1313071189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313071189 is an equidigital number, since it uses as much as digits as its factorization.

1313071189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 1313071189 is about 36236.3241651247. The cubic root of 1313071189 is about 1095.0385894395.

It can be divided in two parts, 131307 and 1189, that added together give a square (132496 = 364²).

The spelling of 1313071189 in words is "one billion, three hundred thirteen million, seventy-one thousand, one hundred eighty-nine".